Thanks a lot Kretschmer. i will try it .
Regards,
Ram
----- Original Message -----
From: "A. Kretschmer" <andreas.kretsch...@schollglas.com>
To: <pgsql-performance@postgresql.org>
Sent: Tuesday, November 24, 2009 11:45 AM
Subject: Re: [PERFORM] Query is slow when executing in procedure
In response to ramasubramanian :
Dear all,
The query is slow when executing in the stored procedure(it is taking
around 1 minute). when executing as a sql it is taking 4 seconds.
basically i am selecting the varchar column which contain 4000 character.
We
have as iindex on the table. We have analyzed the table also. What could
be the
reason. How to improve it?
The reason is hard to guess, because you don't provide enough
informations like the function code.
My guess:
You calls the function with a parameter, and the planner isn't able to
chose a fast plan because he doesn't know the parameter. That's why he
is choosen a seq-scan. You can rewrite your function to using dynamical
execute a string that contains your sql to force the planner search an
optimal plan for your actual parameter.
But yes, that's only a wild guess (and sorry about my english...)
Please, show us the table and the function-code.
Regards, Andreas
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
GnuPG: 0x31720C99, 1006 CCB4 A326 1D42 6431 2EB0 389D 1DC2 3172 0C99
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
